High-Efficiency Continuous Flow Hot Water Systems

Unlike traditional storage tanks that hold and constantly reheat a large volume of water, a continuous flow system operates entirely on demand. When you turn on a hot tap, an internal flow sensor detects the water movement and instantly ignites the high-powered gas burner.

The cold water is then rapidly pushed through a highly conductive copper heat exchanger, warming it to the exact pre-set temperature in a matter of seconds before it reaches your shower or sink. The moment you turn the tap off, the system shuts down completely, meaning you only ever pay for the gas you actively use.

Yes, as long as your property has a steady supply of gas and mains water, a continuous flow system will literally never run cold. Because it heats the water instantaneously as it passes through the unit, there is no finite storage tank to deplete.

This makes them the absolute perfect solution for large families, teenagers who take incredibly long showers, or households where multiple bathrooms are used back-to-back in the morning. You can run the hot water all day, and the temperature will remain perfectly consistent from the first minute to the last.

This is the most critical factor when upgrading from an old storage tank to an instantaneous system. Continuous flow units require a significantly larger volume of gas to heat the water so rapidly, which means your existing residential gas supply pipe might be too narrow to deliver the required pressure.

During our initial site assessment, we accurately calculate your property's gas load and measure the diameter of your current pipework. If an upgrade is required, our licensed gasfitters will safely run a new, correctly sized gas line from your meter directly to the new unit, ensuring it operates safely and at peak efficiency without starving your other gas appliances.

It is completely normal for a continuous flow system to take a few seconds longer to deliver hot water to the tap compared to an old storage tank. When you turn the tap on, the system needs a brief moment to detect the flow, ignite the burner, and heat the water travelling through the internal exchanger.

Additionally, that freshly heated water then has to travel through the internal pipework of your house to reach the specific fixture you are using. To minimise this slight delay, we always aim to install the new unit as close to your most frequently used bathrooms or kitchen as the physical layout of your property allows.

Yes, while they are incredibly reliable and do not have a sacrificial anode like storage tanks do, they still require professional preventative maintenance. Most major manufacturers stipulate a routine service every two to three years to keep the internal components functioning correctly and to validate your valuable warranty.

During a service, we clean the internal water filters, inspect the gas burner pressure, and flush the heat exchanger to remove any mineral scale buildup. In areas with hard scheme water, this scale can aggressively clog the narrow copper pipes inside the unit, forcing it to work harder and eventually causing it to overheat or fail completely if left unchecked.